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Finding the Fourth Proportional to 245,658.16, 339,004.29 and 138,228.13

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Solution

The fourth proportional to 245,658.16, 339,004.29 and 138,228.13 is: 190,752.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,658.16 : 339,004.29 = 138,228.13 : x
  2. Step 2: Convert to fraction form
    245,658.16/339,004.29 = 138,228.13/x
  3. Step 3: Cross multiply
    245,658.16x = 339,004.29 × 138,228.13
  4. Step 4: Simplify right side
    245,658.16x = 46,859,929,068.68
  5. Step 5: Solve for x
    x = 46,859,929,068.68/245,658.16
  6. Step 6: Final answer
    x = 190,752.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.